form {
    width: 600px;
    height: 300px;
    margin: 100px auto;
    border: 1px solid black;
    padding: 40px 100px;
    box-sizing: border-box;
}

input {
    width: 300px;
    height: 30px;
}

button {
    margin-top: 30px;
    margin-left: 270px;
    width: 80px;
    height: 40px;
    font-size: 16px;
}